As alot of U know I am bldg a new 477 NT w/ Ilmor 725/Indy's! Ilmor recommends the aerators! They have done them on the 1 43 Sunny, 400 Formula SS, & they R on a new 38 Formula Fastech! They claim they help CONSIDERABLY 2 plane the boats??? thoughts???? Yes, there is an upshot 4 them!!